#! /bin/bash

# set -x
set -e

die()
{
    echo Error: ${1+"$@"}
    exit 1
}

progname=`basename $0`

if ! [ -f docbook/catalog -a -d "$srcdir/generated" ]; then
    die $progname must be run from the doc sub-directory of the build \
tree and passed a correct srcdir variable.
fi

builddir=`pwd`
abs_srcdir=`cd $srcdir && pwd`

echo 'Generating documentation in the build tree.'
[ -d tmp-dist ] && rm -Rf tmp-dist
make clean
mkdir tmp-dist
make doc_top_distdir=`pwd`/tmp-dist distdir=./tmp-dist distdir

if ! [ -d tmp-dist/doc/generated ]; then 
    die Something went wrong when generating the documentation.
fi

echo -n 'Looking for removed files...'
: > tmp-dist/removed
{ cd "$abs_srcdir" && find generated -name .svn -prune -o -type f -print ; } | {
cd tmp-dist/doc && while read -a file; do
    if ! [ -f "${file[*]}" ]; then
        echo "${file[*]}" >> ../removed
    fi
done
}
echo `cat tmp-dist/removed`.

echo -n 'Looking for added files and non empty directories...'
: > tmp-dist/added_files
: > tmp-dist/added_dirs
{ cd tmp-dist/doc && find generated; } | {
cd "$abs_srcdir" && while read -a file; do
    if ! [ -e "${file[*]}" ]; then
        if [ -f "$builddir/tmp-dist/doc/${file[*]}" ]; then
            echo "${file[*]}" >> "$builddir/tmp-dist/added_files"
        else
            if ! rmdir "$builddir/tmp-dist/doc/${file[*]}" >& /dev/null; then
                echo "${file[*]}" >> "$builddir/tmp-dist/added_dirs"
            fi
        fi
    fi
done
}
echo `cat tmp-dist/added_dirs tmp-dist/added_files`

echo -n 'Copying generated documentation in the source tree...'
cp -aR tmp-dist/doc/generated "$abs_srcdir"
echo done

cd "$abs_srcdir"
echo -n 'Removing files...'
cat "$builddir/tmp-dist/removed" | while read -a file; do
    rm "${file[*]}"
    svn remove "${file[*]}"
done
echo `cat "$builddir/tmp-dist/removed"` done.

echo -n 'Adding new directories...'
cat "$builddir/tmp-dist/added_dirs" | while read -a dir; do
    svn add "${dir[*]}"
done
echo `cat "$builddir/tmp-dist/added_dirs"` done.

echo -n 'Adding new files...'
    cat "$builddir/tmp-dist/added_files" | while read -a file; do
    svn add "${file[*]}"
done
echo `cat "$builddir/tmp-dist/added_files"` done.
